Hire the Best Concept Development & Testing Freelancers
in the United States

Clients rate our Concept Development & Testing professionals
Rating is 4.9 out of 5.
4.9/5
Based on 167 client reviews
Tinatin A.

East Brunswick, New Jersey

$25/hr
5.0
13 jobs

Bugs found before launch save thousands in fixes after. I help startups and product teams ship cleaner software by catching critical issues early — before real users do. What I deliver: → Detailed bug reports with clear reproduction steps → Structured test cases for web & mobile apps → Fast turnaround with clear communication Tools: Jira, Trello, TestRail | Certified in Software Quality Engineering Ready to test your product? Let’s talk

  • Testing
  • Software QA
  • QA Testing
  • QA Software & Testing Tools
  • Mobile QA
  • Test Report
  • Test Script
  • Manual Testing
  • UserTesting
  • User Experience
Jered H.

Kilgore, Texas

$15/hr
5.0
36 jobs

I'm an experienced QA Tester and developer with a strong background in testing websites, web applications, and mobile apps. While I’m new to Upwork, I’ve helped clients and teams deliver smooth, reliable, and user-friendly software by catching bugs, improving performance, and making sure everything works exactly as it should. I blend a developer’s technical knowledge with a tester’s eye for detail, which helps me quickly spot issues and communicate clearly. What I Can Help With ✅ Website Testing – Check functionality, layout, and responsiveness ✅ Web Application Testing – Test flows, forms, and APIs ✅ Mobile App Testing – iOS & Android real-device testing ✅ Bug Reports – Clear steps with screenshots or video ✅ Test Cases & Checklists – Organized and easy to follow ✅ Basic Automation – Familiar with tools like Selenium and Postman Why Work With Me? 🔹 Real Hands-On Experience – I’ve tested real apps and built them too 🔹 Reliable & Fast – I meet deadlines and communicate clearly 🔹 Detail-Oriented – I don’t just skim—I go deep 🔹 Easy to Work With – Friendly, honest, and always professional I’m here to build great client relationships through excellent work. If you're looking for someone who can test your website, app, or software with care and precision, let’s connect—I’d love to help.

  • Software Testing
  • Web Development
  • Technical Copywriting
  • Technical Analysis
  • Technical Writing
  • WordPress
  • Academic Writing
  • Dissertation Writing
  • Data Analysis
  • IBM SPSS
  • Data Collection
  • Data Visualization
  • R
  • Usability Testing
  • Survey
Dhruv R.

Passaic, New Jersey

$25/hr
5.0
8 jobs

Most brands don't have a content problem, they have a conversion problem. They're posting AI videos that look good but don't drive clicks, engagement, or sales. The output I deliver is the kind of work studios used to spend hundreds of thousands of dollars and months of production on. I produce it in hours, for a fraction of the cost, and it's built to perform, not just impress. That's where I come in. I help brands turn ideas into high-performing AI video ads, TikTok Shop product videos, UGC-style content, and short-form ads designed to convert across TikTok, Instagram Reels, Meta, and YouTube Shorts. -WHAT I CREATE • AI video ads for TikTok, Meta, and YouTube • AI UGC ads (creator-style, natural, high-converting content) • TikTok Shop video ads & short-form product ads (Reels, Shorts, TikTok • AI product videos & eCommerce ad creatives • AI spokesperson & avatar videos (HeyGen-style) • SaaS explainer videos & app demo videos • AI social media content & digital marketing videos -WHY MY VIDEOS PERFORM Most AI-generated videos fail because they: • Look generic or robotic • Miss strong hooks • Ignore platform behavior • Focus on visuals instead of performance I combine AI video creation + performance marketing + storytelling to produce videos that: ✔ Capture attention in the first 1–3 seconds ✔ Feel native to TikTok, Instagram, and Meta ads ✔ Communicate value quickly and clearly ✔ Drive engagement, clicks, and conversions Because brands don’t scale from “nice visuals” — they scale from creative that performs. -MY PROCESS I handle the full process from concept to final delivery: • Creative strategy & ad concept development • Scriptwriting & hook creation • AI video generation (UGC, product, cinematic) • AI voiceover & audio production • Video editing, captions, and motion design • Optimization for paid ads and social media platforms -TOOLS & AI WORKFLOW AI Video: Veo3, Sora, Runway, Kling, Pika AI Avatars: HeyGen, Synthesia Voice: ElevenLabs Image Creation: Midjourney, Leonardo AI Editing: Adobe Premiere Pro, After Effects, CapCut --INDUSTRIES I WORK WITH • eCommerce & Shopify brands • TikTok Shop sellers • SaaS & tech startups • Coaches & digital product creators • Marketing agencies & content teams • Beauty, fashion, lifestyle, and consumer brands --WHAT YOU CAN EXPECT ✔ High-converting video ads ✔ Scroll-stopping hooks ✔ Clean, realistic AI visuals ✔ Platform-optimized content (TikTok, Meta, YouTube) ✔ Fast turnaround & clear communication ✔ Performance-focused creative strategy --WHY CLIENTS WORK WITH ME • AI Video Ads Creator + Strategist (not just an editor) • Strong understanding of TikTok Ads & Meta Ads • Experience with UGC, product ads & short-form content • Focus on results: CTR, engagement, and conversions • Scalable AI video production systems -LET’S WORK If you’re looking for AI video ads, UGC content, or short-form videos that actually drive results — not just views Send me a message. Let’s build video ads that convert. AI Video Creator, AI Video Ads, AI UGC Video, AI Video Editor, AI Video Production, AI Video Generator, AI-Generated Video, AI Video Specialist, AI Content Creator, AI Content Creation, AI Image Generation, AI Image Creator, AI Product Visuals, Product Photography AI, AI Commercial Video, AI Brand Video, AI Promo Video, AI Explainer Video, AI Spokesperson Video, AI Avatar Video, AI Talking Head Video, AI Presenter Video, Faceless AI Video, AI Cinematic Video, Cinematic AI Ads, Short-Form Video Ads, Short Video Ad, Video Ad, Video Ad Campaign, Video Commercial, Social Media Video, TikTok Video Ads, Instagram Reels, YouTube Shorts, Meta Ads Creative, Facebook Video Ads, DTC Video Ads, Ecommerce Video Ads, Shopify Video Ads, Amazon Product Video, Performance Video Ads, Direct Response Video, Scroll-Stopping Ads, Hook Video, High-Converting Video Ads, Conversion-Focused Editing, Retention Editing, A/B Hook Testing, UGC Video Ads, UGC-Style Video, AI UGC Ads, Faceless UGC, AI Avatar Ads, HeyGen, Kling AI, Kling 3.0, Veo3, Veo 3, Google Veo 3, Sora, Sora2, Runway, Runway ML, Seedance, Seedance 2.0, Higgsfield, Higgsfield UGC Factory, Arcads, Synthesia, Pika Labs, Hailuo, InVideo AI, ElevenLabs, AI Voice Cloning, AI Voiceover, Lip Sync Video, Midjourney, Leonardo AI, Stable Diffusion, FLUX AI, Nano Banana, Ideogram, Krea AI, Adobe Premiere Pro, Adobe After Effects, CapCut Pro, DaVinci Resolve, Final Cut Pro, Topaz Video AI, Motion Graphics, Video Editing, Video Post-Editing, Video Production, Color Correction, Color Grading, Captions, Subtitles, Sound Design, 9:16 Vertical Video, 1:1 Square Video, 16:9 Landscape Video, AI Prompt Engineering, Character Consistency, Scene Consistency, Text to Video, Script to Video, Image to Video, AI Product Photography, AI Lifestyle Visuals, AI Fashion Video, AI Beauty Video, AI Jewelry Video, AI Cosmetics Video, AI Real Estate Video, AI SaaS Video, AI Startup Video, AI Health Video, AI Supplement Video, AI Skincare Video,

  • AI Video Generation
  • AI Video Generator
  • AI-Generated Video
  • Video Editing
  • Video Production
  • Video Editing & Production
  • Video Advertising
  • Video Ad Campaign
  • Social Media Video
  • UGC
  • Explainer Video
  • Motion Graphics
  • Animation
  • YouTube Video
  • TikTok Video
  • Instagram Reels
  • AI Content Creation
  • AI Image Generation
  • Adobe Premiere Pro
  • Adobe After Effects
Athira S.

Drexel Hill, Pennsylvania

$12/hr
5.0
44 jobs

I have hands-on experience in AI data annotation, labeling, and evaluation, supported by a strong scientific research background that emphasizes accuracy, consistency, and protocol adherence. Through freelance and platform-based AI projects, I have worked on image, audio, and content annotation tasks, carefully following detailed guidelines to produce high-quality training data for machine learning models. My background in biological research has strengthened my ability to analyze complex information, maintain precise documentation, and apply standardized evaluation criteria—skills that directly enhance my effectiveness in AI data labeling, quality assurance, and model training workflows.

  • Software QA
  • Accuracy Verification
  • Typing
  • Data Entry
  • Manual Testing
  • Web Testing
  • Functional Testing
  • Customer Service
  • English
  • Bug Reports
  • Quality Assurance
  • Mobile App Testing
  • Game Testing
  • iOS
Zayk C.

Tucson, AA

$18/hr
5.0
7 jobs

QA Tester with moderate programming skills, problem solving skills, some beta testing experience, R&D experience, and a passion for improving design. I am excited to continue to learn and bring my skillset to new contexts.

  • Beta Testing
  • Writing
  • Mathematics
  • Scripting
  • Python
  • C#
  • Physics
  • Research & Development
  • Microsoft Excel
  • Customer Service
  • Game Development
  • Unity
  • Lua
Daniel L.

Alpharetta, Georgia

$100/hr
5.0
27 jobs

🌟 Experienced 5★ “J♤” Technical Freelancer; 🚀 Joined Upwork in August 2022, quickly earning the [Rising Talent] badge and achieving a strong Job Success Score (JSS) by October 2022; 🏆 Proudly achieved [Top Rated] status in January 2023, reflecting my commitment to delivering exceptional results and client satisfaction. ⁜⁜ Why Hire Me? ⁜⁜ ✨ Experience That Counts: With 10+ years of enterprise-level experience in the IT industry, I bring a unique blend of technical expertise and business acumen to every project. Your goals become my priority, ensuring innovative solutions tailored to your needs. 🎖️ Unmatched Work Ethic: As a military veteran, I uphold values of selfless service, integrity, and precision. Clients can trust me to deliver high-quality work on time and within budget, every time. 🎨 Creative Meets Technical: With a university degree in both tech and art, I combine creativity with technology to craft solutions that not only function flawlessly but also look great and exceed expectations. 🗂️ Organized and Detail-Oriented: Meticulous work tracking and organization are my forte. Whether it’s progress tracking, troubleshooting, or time management, I ensure every aspect of your project is well-documented and easily revisitable for future improvements. ⁜⁜ I Understand Your Pain Points ⁜⁜ ❌ Missed Deadlines or Incomplete Work? ✔️ I am 100% committed to meeting deadlines and exceeding expectations. If needed, I propose iterative milestones to ensure steady progress and keep you informed ahead of time about any potential challenges—no surprises, just solutions! 🔄 Handling Changing Requirements? ✔️ Flexibility is key! I thrive in dynamic environments and can effortlessly adapt to evolving project needs. Change is expected, and I’m ready to embrace it. ⏰ Time Zone Challenges? ✔️ No problem! I’ve worked with global clients and am skilled at synchronizing schedules to ensure smooth collaboration. I can also automate repetitive tasks to optimize efficiency, regardless of time zone differences. ⁜⁜ BACKGROUND & PROFICIENCIES ⁜⁜ With 10+ years of professional experience, I specialize in building and testing innovative enterprise-level solutions that meet both technical and non-technical requirements with precision. I'm passionate about delivering results that align with acceptance criteria, all while being feedback-driven to ensure continuous improvement. My expertise spans the entire software development lifecycle (SDLC), and I'm a strong advocate for automation and CI/CD practices to enhance efficiency and quality. I thrive on learning new technologies and evolving with the industry, always bringing a can-do attitude to every project. Let's build something amazing together! 💻✨ Soft skills and proficiencies include (but not limited to) → ● Full stack development which consists of UX + front-end web application and GCP + AWS Cloud/ server + database + back-end application. ● Manage desktop and web administration systems. ● System + web/ network testing, troubleshooting, maintenance, and support. ● MS applications and scripting including data entry and analysis i.e., VBA/ macros + web scraping. ● Design and presentation using Adobe programs/ collections + creative applications for commercial use i.e., graphic design, video/ animation, and sound. Tech stack → ● Eclipse/ RAD | IntelliJ | Microsoft VS | ● GCP/ AWS Cloud ● IBM Websphere/ Apigee ● HTML5 | CSS | Javascript/ JQuery | React/ NodeJS | Mocha/ Chai | PHP ● SonarQube/ SonarLint | Fortify SCA | Checkstyle | ESLint | PMD | Dynatrace ● Google Analytics/ GTM ● Java/ J2EE | Spring | JUnit/ Mockito | Hibernate | SQL/ NoSQL ● Swagger/ Insomnia/ Postman ● Maven | SVN/ GIT ● Bitbucket/ Github ● Bamboo/ CircleCI/ Github Actions ● Macros/ VBA/ PowerQuery

  • Concept Development
  • Tech & IT
  • Web Development
  • QA Software & Testing Tools
  • Analytics
  • Automation
  • Application
  • Troubleshooting
  • Documentation
  • Structured Programming
  • Design-to-Code
  • Customer Experience
  • Process Optimization
  • System Administration
  • Security Analysis

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